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![Hans Verkuil](/assets/img/avatar_default.png)
The term 'videobuf' typically refers to the old videobuf version 1 framework. Avoid using this word in drivers that are converted to vb2. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
1427 lines
33 KiB
C
1427 lines
33 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* A virtual v4l2-mem2mem example device.
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*
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* This is a virtual device driver for testing mem-to-mem vb2 framework.
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* It simulates a device that uses memory buffers for both source and
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* destination, processes the data and issues an "irq" (simulated by a delayed
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* workqueue).
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* The device is capable of multi-instance, multi-buffer-per-transaction
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* operation (via the mem2mem framework).
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*
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* Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
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* Pawel Osciak, <pawel@osciak.com>
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* Marek Szyprowski, <m.szyprowski@samsung.com>
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*/
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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/fs.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/platform_device.h>
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#include <media/v4l2-mem2mem.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-event.h>
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#include <media/videobuf2-vmalloc.h>
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MODULE_DESCRIPTION("Virtual device for mem2mem framework testing");
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MODULE_AUTHOR("Pawel Osciak, <pawel@osciak.com>");
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MODULE_LICENSE("GPL");
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MODULE_VERSION("0.2");
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MODULE_ALIAS("mem2mem_testdev");
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static unsigned int debug;
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module_param(debug, uint, 0644);
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MODULE_PARM_DESC(debug, "debug level");
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/* Default transaction time in msec */
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static unsigned int default_transtime = 40; /* Max 25 fps */
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module_param(default_transtime, uint, 0644);
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MODULE_PARM_DESC(default_transtime, "default transaction time in ms");
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#define MIN_W 32
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#define MIN_H 32
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#define MAX_W 640
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#define MAX_H 480
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/* Pixel alignment for non-bayer formats */
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#define WIDTH_ALIGN 2
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#define HEIGHT_ALIGN 1
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/* Pixel alignment for bayer formats */
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#define BAYER_WIDTH_ALIGN 2
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#define BAYER_HEIGHT_ALIGN 2
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/* Flags that indicate a format can be used for capture/output */
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#define MEM2MEM_CAPTURE BIT(0)
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#define MEM2MEM_OUTPUT BIT(1)
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#define MEM2MEM_NAME "vim2m"
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/* Per queue */
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#define MEM2MEM_DEF_NUM_BUFS VIDEO_MAX_FRAME
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/* In bytes, per queue */
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#define MEM2MEM_VID_MEM_LIMIT (16 * 1024 * 1024)
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/* Flags that indicate processing mode */
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#define MEM2MEM_HFLIP BIT(0)
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#define MEM2MEM_VFLIP BIT(1)
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#define dprintk(dev, lvl, fmt, arg...) \
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v4l2_dbg(lvl, debug, &(dev)->v4l2_dev, "%s: " fmt, __func__, ## arg)
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static void vim2m_dev_release(struct device *dev)
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{}
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static struct platform_device vim2m_pdev = {
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.name = MEM2MEM_NAME,
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.dev.release = vim2m_dev_release,
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};
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struct vim2m_fmt {
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u32 fourcc;
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int depth;
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/* Types the format can be used for */
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u32 types;
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};
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static struct vim2m_fmt formats[] = {
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{
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.fourcc = V4L2_PIX_FMT_RGB565, /* rrrrrggg gggbbbbb */
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.depth = 16,
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.types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
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}, {
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.fourcc = V4L2_PIX_FMT_RGB565X, /* gggbbbbb rrrrrggg */
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.depth = 16,
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.types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
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}, {
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.fourcc = V4L2_PIX_FMT_RGB24,
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.depth = 24,
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.types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
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}, {
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.fourcc = V4L2_PIX_FMT_BGR24,
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.depth = 24,
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.types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
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}, {
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.fourcc = V4L2_PIX_FMT_YUYV,
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.depth = 16,
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.types = MEM2MEM_CAPTURE,
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}, {
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.fourcc = V4L2_PIX_FMT_SBGGR8,
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.depth = 8,
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.types = MEM2MEM_CAPTURE,
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}, {
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.fourcc = V4L2_PIX_FMT_SGBRG8,
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.depth = 8,
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.types = MEM2MEM_CAPTURE,
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}, {
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.fourcc = V4L2_PIX_FMT_SGRBG8,
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.depth = 8,
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.types = MEM2MEM_CAPTURE,
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}, {
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.fourcc = V4L2_PIX_FMT_SRGGB8,
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.depth = 8,
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.types = MEM2MEM_CAPTURE,
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},
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};
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#define NUM_FORMATS ARRAY_SIZE(formats)
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/* Per-queue, driver-specific private data */
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struct vim2m_q_data {
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unsigned int width;
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unsigned int height;
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unsigned int sizeimage;
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unsigned int sequence;
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struct vim2m_fmt *fmt;
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};
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enum {
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V4L2_M2M_SRC = 0,
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V4L2_M2M_DST = 1,
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};
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#define V4L2_CID_TRANS_TIME_MSEC (V4L2_CID_USER_BASE + 0x1000)
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#define V4L2_CID_TRANS_NUM_BUFS (V4L2_CID_USER_BASE + 0x1001)
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static struct vim2m_fmt *find_format(u32 fourcc)
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{
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struct vim2m_fmt *fmt;
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unsigned int k;
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for (k = 0; k < NUM_FORMATS; k++) {
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fmt = &formats[k];
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if (fmt->fourcc == fourcc)
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break;
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}
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if (k == NUM_FORMATS)
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return NULL;
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return &formats[k];
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}
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static void get_alignment(u32 fourcc,
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unsigned int *walign, unsigned int *halign)
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{
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switch (fourcc) {
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case V4L2_PIX_FMT_SBGGR8:
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case V4L2_PIX_FMT_SGBRG8:
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case V4L2_PIX_FMT_SGRBG8:
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case V4L2_PIX_FMT_SRGGB8:
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*walign = BAYER_WIDTH_ALIGN;
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*halign = BAYER_HEIGHT_ALIGN;
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return;
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default:
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*walign = WIDTH_ALIGN;
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*halign = HEIGHT_ALIGN;
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return;
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}
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}
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struct vim2m_dev {
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struct v4l2_device v4l2_dev;
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struct video_device vfd;
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#ifdef CONFIG_MEDIA_CONTROLLER
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struct media_device mdev;
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#endif
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atomic_t num_inst;
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struct mutex dev_mutex;
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struct v4l2_m2m_dev *m2m_dev;
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};
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struct vim2m_ctx {
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struct v4l2_fh fh;
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struct vim2m_dev *dev;
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struct v4l2_ctrl_handler hdl;
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/* Processed buffers in this transaction */
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u8 num_processed;
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/* Transaction length (i.e. how many buffers per transaction) */
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u32 translen;
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/* Transaction time (i.e. simulated processing time) in milliseconds */
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u32 transtime;
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struct mutex vb_mutex;
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struct delayed_work work_run;
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/* Abort requested by m2m */
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int aborting;
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/* Processing mode */
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int mode;
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enum v4l2_colorspace colorspace;
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enum v4l2_ycbcr_encoding ycbcr_enc;
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enum v4l2_xfer_func xfer_func;
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enum v4l2_quantization quant;
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/* Source and destination queue data */
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struct vim2m_q_data q_data[2];
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};
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static inline struct vim2m_ctx *file2ctx(struct file *file)
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{
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return container_of(file->private_data, struct vim2m_ctx, fh);
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}
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static struct vim2m_q_data *get_q_data(struct vim2m_ctx *ctx,
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enum v4l2_buf_type type)
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{
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switch (type) {
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case V4L2_BUF_TYPE_VIDEO_OUTPUT:
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return &ctx->q_data[V4L2_M2M_SRC];
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case V4L2_BUF_TYPE_VIDEO_CAPTURE:
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return &ctx->q_data[V4L2_M2M_DST];
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default:
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return NULL;
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}
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}
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static const char *type_name(enum v4l2_buf_type type)
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{
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switch (type) {
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case V4L2_BUF_TYPE_VIDEO_OUTPUT:
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return "Output";
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case V4L2_BUF_TYPE_VIDEO_CAPTURE:
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return "Capture";
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default:
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return "Invalid";
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}
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}
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#define CLIP(__color) \
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(u8)(((__color) > 0xff) ? 0xff : (((__color) < 0) ? 0 : (__color)))
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static void copy_line(struct vim2m_q_data *q_data_out,
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u8 *src, u8 *dst, bool reverse)
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{
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int x, depth = q_data_out->fmt->depth >> 3;
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if (!reverse) {
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memcpy(dst, src, q_data_out->width * depth);
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} else {
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for (x = 0; x < q_data_out->width >> 1; x++) {
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memcpy(dst, src, depth);
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memcpy(dst + depth, src - depth, depth);
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src -= depth << 1;
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dst += depth << 1;
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}
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return;
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}
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}
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static void copy_two_pixels(struct vim2m_q_data *q_data_in,
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struct vim2m_q_data *q_data_out,
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u8 *src[2], u8 **dst, int ypos, bool reverse)
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{
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struct vim2m_fmt *out = q_data_out->fmt;
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struct vim2m_fmt *in = q_data_in->fmt;
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u8 _r[2], _g[2], _b[2], *r, *g, *b;
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int i;
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/* Step 1: read two consecutive pixels from src pointer */
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r = _r;
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g = _g;
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b = _b;
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switch (in->fourcc) {
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case V4L2_PIX_FMT_RGB565: /* rrrrrggg gggbbbbb */
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for (i = 0; i < 2; i++) {
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u16 pix = le16_to_cpu(*(__le16 *)(src[i]));
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*r++ = (u8)(((pix & 0xf800) >> 11) << 3) | 0x07;
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*g++ = (u8)((((pix & 0x07e0) >> 5)) << 2) | 0x03;
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*b++ = (u8)((pix & 0x1f) << 3) | 0x07;
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}
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break;
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case V4L2_PIX_FMT_RGB565X: /* gggbbbbb rrrrrggg */
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for (i = 0; i < 2; i++) {
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u16 pix = be16_to_cpu(*(__be16 *)(src[i]));
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*r++ = (u8)(((pix & 0xf800) >> 11) << 3) | 0x07;
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*g++ = (u8)((((pix & 0x07e0) >> 5)) << 2) | 0x03;
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*b++ = (u8)((pix & 0x1f) << 3) | 0x07;
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}
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break;
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default:
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case V4L2_PIX_FMT_RGB24:
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for (i = 0; i < 2; i++) {
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*r++ = src[i][0];
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*g++ = src[i][1];
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*b++ = src[i][2];
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}
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break;
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case V4L2_PIX_FMT_BGR24:
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for (i = 0; i < 2; i++) {
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*b++ = src[i][0];
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*g++ = src[i][1];
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*r++ = src[i][2];
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}
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break;
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}
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/* Step 2: store two consecutive points, reversing them if needed */
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r = _r;
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g = _g;
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b = _b;
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switch (out->fourcc) {
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case V4L2_PIX_FMT_RGB565: /* rrrrrggg gggbbbbb */
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for (i = 0; i < 2; i++) {
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u16 pix;
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__le16 *dst_pix = (__le16 *)*dst;
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pix = ((*r << 8) & 0xf800) | ((*g << 3) & 0x07e0) |
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(*b >> 3);
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*dst_pix = cpu_to_le16(pix);
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*dst += 2;
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}
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return;
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case V4L2_PIX_FMT_RGB565X: /* gggbbbbb rrrrrggg */
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for (i = 0; i < 2; i++) {
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u16 pix;
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__be16 *dst_pix = (__be16 *)*dst;
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pix = ((*r << 8) & 0xf800) | ((*g << 3) & 0x07e0) |
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(*b >> 3);
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*dst_pix = cpu_to_be16(pix);
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*dst += 2;
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}
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return;
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case V4L2_PIX_FMT_RGB24:
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for (i = 0; i < 2; i++) {
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*(*dst)++ = *r++;
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*(*dst)++ = *g++;
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*(*dst)++ = *b++;
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}
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return;
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case V4L2_PIX_FMT_BGR24:
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for (i = 0; i < 2; i++) {
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*(*dst)++ = *b++;
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*(*dst)++ = *g++;
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*(*dst)++ = *r++;
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}
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return;
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case V4L2_PIX_FMT_YUYV:
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default:
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{
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u8 y, y1, u, v;
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y = ((8453 * (*r) + 16594 * (*g) + 3223 * (*b)
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+ 524288) >> 15);
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u = ((-4878 * (*r) - 9578 * (*g) + 14456 * (*b)
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+ 4210688) >> 15);
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v = ((14456 * (*r++) - 12105 * (*g++) - 2351 * (*b++)
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+ 4210688) >> 15);
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y1 = ((8453 * (*r) + 16594 * (*g) + 3223 * (*b)
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+ 524288) >> 15);
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*(*dst)++ = y;
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*(*dst)++ = u;
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*(*dst)++ = y1;
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*(*dst)++ = v;
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return;
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}
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case V4L2_PIX_FMT_SBGGR8:
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if (!(ypos & 1)) {
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*(*dst)++ = *b;
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*(*dst)++ = *++g;
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} else {
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*(*dst)++ = *g;
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*(*dst)++ = *++r;
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}
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return;
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case V4L2_PIX_FMT_SGBRG8:
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if (!(ypos & 1)) {
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*(*dst)++ = *g;
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*(*dst)++ = *++b;
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} else {
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*(*dst)++ = *r;
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*(*dst)++ = *++g;
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}
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return;
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case V4L2_PIX_FMT_SGRBG8:
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if (!(ypos & 1)) {
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*(*dst)++ = *g;
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*(*dst)++ = *++r;
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} else {
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*(*dst)++ = *b;
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*(*dst)++ = *++g;
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}
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return;
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case V4L2_PIX_FMT_SRGGB8:
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if (!(ypos & 1)) {
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*(*dst)++ = *r;
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*(*dst)++ = *++g;
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} else {
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*(*dst)++ = *g;
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*(*dst)++ = *++b;
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}
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return;
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}
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}
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static int device_process(struct vim2m_ctx *ctx,
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struct vb2_v4l2_buffer *in_vb,
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struct vb2_v4l2_buffer *out_vb)
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{
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struct vim2m_dev *dev = ctx->dev;
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struct vim2m_q_data *q_data_in, *q_data_out;
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u8 *p_in, *p_line, *p_in_x[2], *p, *p_out;
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unsigned int width, height, bytesperline, bytes_per_pixel;
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unsigned int x, y, y_in, y_out, x_int, x_fract, x_err, x_offset;
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int start, end, step;
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q_data_in = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
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if (!q_data_in)
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return 0;
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bytesperline = (q_data_in->width * q_data_in->fmt->depth) >> 3;
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bytes_per_pixel = q_data_in->fmt->depth >> 3;
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q_data_out = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
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if (!q_data_out)
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return 0;
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/* As we're doing scaling, use the output dimensions here */
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height = q_data_out->height;
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width = q_data_out->width;
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p_in = vb2_plane_vaddr(&in_vb->vb2_buf, 0);
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p_out = vb2_plane_vaddr(&out_vb->vb2_buf, 0);
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if (!p_in || !p_out) {
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v4l2_err(&dev->v4l2_dev,
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"Acquiring kernel pointers to buffers failed\n");
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return -EFAULT;
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}
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out_vb->sequence = q_data_out->sequence++;
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in_vb->sequence = q_data_in->sequence++;
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v4l2_m2m_buf_copy_metadata(in_vb, out_vb, true);
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if (ctx->mode & MEM2MEM_VFLIP) {
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start = height - 1;
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end = -1;
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step = -1;
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} else {
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start = 0;
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end = height;
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step = 1;
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}
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y_out = 0;
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/*
|
|
* When format and resolution are identical,
|
|
* we can use a faster copy logic
|
|
*/
|
|
if (q_data_in->fmt->fourcc == q_data_out->fmt->fourcc &&
|
|
q_data_in->width == q_data_out->width &&
|
|
q_data_in->height == q_data_out->height) {
|
|
for (y = start; y != end; y += step, y_out++) {
|
|
p = p_in + (y * bytesperline);
|
|
if (ctx->mode & MEM2MEM_HFLIP)
|
|
p += bytesperline - (q_data_in->fmt->depth >> 3);
|
|
|
|
copy_line(q_data_out, p, p_out,
|
|
ctx->mode & MEM2MEM_HFLIP);
|
|
|
|
p_out += bytesperline;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Slower algorithm with format conversion, hflip, vflip and scaler */
|
|
|
|
/* To speed scaler up, use Bresenham for X dimension */
|
|
x_int = q_data_in->width / q_data_out->width;
|
|
x_fract = q_data_in->width % q_data_out->width;
|
|
|
|
for (y = start; y != end; y += step, y_out++) {
|
|
y_in = (y * q_data_in->height) / q_data_out->height;
|
|
x_offset = 0;
|
|
x_err = 0;
|
|
|
|
p_line = p_in + (y_in * bytesperline);
|
|
if (ctx->mode & MEM2MEM_HFLIP)
|
|
p_line += bytesperline - (q_data_in->fmt->depth >> 3);
|
|
p_in_x[0] = p_line;
|
|
|
|
for (x = 0; x < width >> 1; x++) {
|
|
x_offset += x_int;
|
|
x_err += x_fract;
|
|
if (x_err > width) {
|
|
x_offset++;
|
|
x_err -= width;
|
|
}
|
|
|
|
if (ctx->mode & MEM2MEM_HFLIP)
|
|
p_in_x[1] = p_line - x_offset * bytes_per_pixel;
|
|
else
|
|
p_in_x[1] = p_line + x_offset * bytes_per_pixel;
|
|
|
|
copy_two_pixels(q_data_in, q_data_out,
|
|
p_in_x, &p_out, y_out,
|
|
ctx->mode & MEM2MEM_HFLIP);
|
|
|
|
/* Calculate the next p_in_x0 */
|
|
x_offset += x_int;
|
|
x_err += x_fract;
|
|
if (x_err > width) {
|
|
x_offset++;
|
|
x_err -= width;
|
|
}
|
|
|
|
if (ctx->mode & MEM2MEM_HFLIP)
|
|
p_in_x[0] = p_line - x_offset * bytes_per_pixel;
|
|
else
|
|
p_in_x[0] = p_line + x_offset * bytes_per_pixel;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* mem2mem callbacks
|
|
*/
|
|
|
|
/*
|
|
* job_ready() - check whether an instance is ready to be scheduled to run
|
|
*/
|
|
static int job_ready(void *priv)
|
|
{
|
|
struct vim2m_ctx *ctx = priv;
|
|
|
|
if (v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) < ctx->translen
|
|
|| v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx) < ctx->translen) {
|
|
dprintk(ctx->dev, 1, "Not enough buffers available\n");
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void job_abort(void *priv)
|
|
{
|
|
struct vim2m_ctx *ctx = priv;
|
|
|
|
/* Will cancel the transaction in the next interrupt handler */
|
|
ctx->aborting = 1;
|
|
}
|
|
|
|
/* device_run() - prepares and starts the device
|
|
*
|
|
* This simulates all the immediate preparations required before starting
|
|
* a device. This will be called by the framework when it decides to schedule
|
|
* a particular instance.
|
|
*/
|
|
static void device_run(void *priv)
|
|
{
|
|
struct vim2m_ctx *ctx = priv;
|
|
struct vb2_v4l2_buffer *src_buf, *dst_buf;
|
|
|
|
src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
|
|
dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
|
|
|
|
/* Apply request controls if any */
|
|
v4l2_ctrl_request_setup(src_buf->vb2_buf.req_obj.req,
|
|
&ctx->hdl);
|
|
|
|
device_process(ctx, src_buf, dst_buf);
|
|
|
|
/* Complete request controls if any */
|
|
v4l2_ctrl_request_complete(src_buf->vb2_buf.req_obj.req,
|
|
&ctx->hdl);
|
|
|
|
/* Run delayed work, which simulates a hardware irq */
|
|
schedule_delayed_work(&ctx->work_run, msecs_to_jiffies(ctx->transtime));
|
|
}
|
|
|
|
static void device_work(struct work_struct *w)
|
|
{
|
|
struct vim2m_ctx *curr_ctx;
|
|
struct vim2m_dev *vim2m_dev;
|
|
struct vb2_v4l2_buffer *src_vb, *dst_vb;
|
|
|
|
curr_ctx = container_of(w, struct vim2m_ctx, work_run.work);
|
|
|
|
vim2m_dev = curr_ctx->dev;
|
|
|
|
src_vb = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx);
|
|
dst_vb = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx);
|
|
|
|
curr_ctx->num_processed++;
|
|
|
|
v4l2_m2m_buf_done(src_vb, VB2_BUF_STATE_DONE);
|
|
v4l2_m2m_buf_done(dst_vb, VB2_BUF_STATE_DONE);
|
|
|
|
if (curr_ctx->num_processed == curr_ctx->translen
|
|
|| curr_ctx->aborting) {
|
|
dprintk(curr_ctx->dev, 2, "Finishing capture buffer fill\n");
|
|
curr_ctx->num_processed = 0;
|
|
v4l2_m2m_job_finish(vim2m_dev->m2m_dev, curr_ctx->fh.m2m_ctx);
|
|
} else {
|
|
device_run(curr_ctx);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* video ioctls
|
|
*/
|
|
static int vidioc_querycap(struct file *file, void *priv,
|
|
struct v4l2_capability *cap)
|
|
{
|
|
strscpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver));
|
|
strscpy(cap->card, MEM2MEM_NAME, sizeof(cap->card));
|
|
snprintf(cap->bus_info, sizeof(cap->bus_info),
|
|
"platform:%s", MEM2MEM_NAME);
|
|
return 0;
|
|
}
|
|
|
|
static int enum_fmt(struct v4l2_fmtdesc *f, u32 type)
|
|
{
|
|
int i, num;
|
|
struct vim2m_fmt *fmt;
|
|
|
|
num = 0;
|
|
|
|
for (i = 0; i < NUM_FORMATS; ++i) {
|
|
if (formats[i].types & type) {
|
|
/* index-th format of type type found ? */
|
|
if (num == f->index)
|
|
break;
|
|
/*
|
|
* Correct type but haven't reached our index yet,
|
|
* just increment per-type index
|
|
*/
|
|
++num;
|
|
}
|
|
}
|
|
|
|
if (i < NUM_FORMATS) {
|
|
/* Format found */
|
|
fmt = &formats[i];
|
|
f->pixelformat = fmt->fourcc;
|
|
return 0;
|
|
}
|
|
|
|
/* Format not found */
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
|
|
struct v4l2_fmtdesc *f)
|
|
{
|
|
return enum_fmt(f, MEM2MEM_CAPTURE);
|
|
}
|
|
|
|
static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,
|
|
struct v4l2_fmtdesc *f)
|
|
{
|
|
return enum_fmt(f, MEM2MEM_OUTPUT);
|
|
}
|
|
|
|
static int vidioc_enum_framesizes(struct file *file, void *priv,
|
|
struct v4l2_frmsizeenum *fsize)
|
|
{
|
|
if (fsize->index != 0)
|
|
return -EINVAL;
|
|
|
|
if (!find_format(fsize->pixel_format))
|
|
return -EINVAL;
|
|
|
|
fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
|
|
fsize->stepwise.min_width = MIN_W;
|
|
fsize->stepwise.min_height = MIN_H;
|
|
fsize->stepwise.max_width = MAX_W;
|
|
fsize->stepwise.max_height = MAX_H;
|
|
|
|
get_alignment(fsize->pixel_format,
|
|
&fsize->stepwise.step_width,
|
|
&fsize->stepwise.step_height);
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_g_fmt(struct vim2m_ctx *ctx, struct v4l2_format *f)
|
|
{
|
|
struct vb2_queue *vq;
|
|
struct vim2m_q_data *q_data;
|
|
|
|
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
|
|
if (!vq)
|
|
return -EINVAL;
|
|
|
|
q_data = get_q_data(ctx, f->type);
|
|
if (!q_data)
|
|
return -EINVAL;
|
|
|
|
f->fmt.pix.width = q_data->width;
|
|
f->fmt.pix.height = q_data->height;
|
|
f->fmt.pix.field = V4L2_FIELD_NONE;
|
|
f->fmt.pix.pixelformat = q_data->fmt->fourcc;
|
|
f->fmt.pix.bytesperline = (q_data->width * q_data->fmt->depth) >> 3;
|
|
f->fmt.pix.sizeimage = q_data->sizeimage;
|
|
f->fmt.pix.colorspace = ctx->colorspace;
|
|
f->fmt.pix.xfer_func = ctx->xfer_func;
|
|
f->fmt.pix.ycbcr_enc = ctx->ycbcr_enc;
|
|
f->fmt.pix.quantization = ctx->quant;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_g_fmt_vid_out(struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
return vidioc_g_fmt(file2ctx(file), f);
|
|
}
|
|
|
|
static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
return vidioc_g_fmt(file2ctx(file), f);
|
|
}
|
|
|
|
static int vidioc_try_fmt(struct v4l2_format *f, struct vim2m_fmt *fmt)
|
|
{
|
|
int walign, halign;
|
|
/*
|
|
* V4L2 specification specifies the driver corrects the
|
|
* format struct if any of the dimensions is unsupported
|
|
*/
|
|
if (f->fmt.pix.height < MIN_H)
|
|
f->fmt.pix.height = MIN_H;
|
|
else if (f->fmt.pix.height > MAX_H)
|
|
f->fmt.pix.height = MAX_H;
|
|
|
|
if (f->fmt.pix.width < MIN_W)
|
|
f->fmt.pix.width = MIN_W;
|
|
else if (f->fmt.pix.width > MAX_W)
|
|
f->fmt.pix.width = MAX_W;
|
|
|
|
get_alignment(f->fmt.pix.pixelformat, &walign, &halign);
|
|
f->fmt.pix.width &= ~(walign - 1);
|
|
f->fmt.pix.height &= ~(halign - 1);
|
|
f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
|
|
f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
|
|
f->fmt.pix.field = V4L2_FIELD_NONE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
struct vim2m_fmt *fmt;
|
|
struct vim2m_ctx *ctx = file2ctx(file);
|
|
|
|
fmt = find_format(f->fmt.pix.pixelformat);
|
|
if (!fmt) {
|
|
f->fmt.pix.pixelformat = formats[0].fourcc;
|
|
fmt = find_format(f->fmt.pix.pixelformat);
|
|
}
|
|
if (!(fmt->types & MEM2MEM_CAPTURE)) {
|
|
v4l2_err(&ctx->dev->v4l2_dev,
|
|
"Fourcc format (0x%08x) invalid.\n",
|
|
f->fmt.pix.pixelformat);
|
|
return -EINVAL;
|
|
}
|
|
f->fmt.pix.colorspace = ctx->colorspace;
|
|
f->fmt.pix.xfer_func = ctx->xfer_func;
|
|
f->fmt.pix.ycbcr_enc = ctx->ycbcr_enc;
|
|
f->fmt.pix.quantization = ctx->quant;
|
|
|
|
return vidioc_try_fmt(f, fmt);
|
|
}
|
|
|
|
static int vidioc_try_fmt_vid_out(struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
struct vim2m_fmt *fmt;
|
|
struct vim2m_ctx *ctx = file2ctx(file);
|
|
|
|
fmt = find_format(f->fmt.pix.pixelformat);
|
|
if (!fmt) {
|
|
f->fmt.pix.pixelformat = formats[0].fourcc;
|
|
fmt = find_format(f->fmt.pix.pixelformat);
|
|
}
|
|
if (!(fmt->types & MEM2MEM_OUTPUT)) {
|
|
v4l2_err(&ctx->dev->v4l2_dev,
|
|
"Fourcc format (0x%08x) invalid.\n",
|
|
f->fmt.pix.pixelformat);
|
|
return -EINVAL;
|
|
}
|
|
if (!f->fmt.pix.colorspace)
|
|
f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
|
|
|
|
return vidioc_try_fmt(f, fmt);
|
|
}
|
|
|
|
static int vidioc_s_fmt(struct vim2m_ctx *ctx, struct v4l2_format *f)
|
|
{
|
|
struct vim2m_q_data *q_data;
|
|
struct vb2_queue *vq;
|
|
|
|
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
|
|
if (!vq)
|
|
return -EINVAL;
|
|
|
|
q_data = get_q_data(ctx, f->type);
|
|
if (!q_data)
|
|
return -EINVAL;
|
|
|
|
if (vb2_is_busy(vq)) {
|
|
v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__);
|
|
return -EBUSY;
|
|
}
|
|
|
|
q_data->fmt = find_format(f->fmt.pix.pixelformat);
|
|
q_data->width = f->fmt.pix.width;
|
|
q_data->height = f->fmt.pix.height;
|
|
q_data->sizeimage = q_data->width * q_data->height
|
|
* q_data->fmt->depth >> 3;
|
|
|
|
dprintk(ctx->dev, 1,
|
|
"Format for type %s: %dx%d (%d bpp), fmt: %c%c%c%c\n",
|
|
type_name(f->type), q_data->width, q_data->height,
|
|
q_data->fmt->depth,
|
|
(q_data->fmt->fourcc & 0xff),
|
|
(q_data->fmt->fourcc >> 8) & 0xff,
|
|
(q_data->fmt->fourcc >> 16) & 0xff,
|
|
(q_data->fmt->fourcc >> 24) & 0xff);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
int ret;
|
|
|
|
ret = vidioc_try_fmt_vid_cap(file, priv, f);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return vidioc_s_fmt(file2ctx(file), f);
|
|
}
|
|
|
|
static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
|
|
struct v4l2_format *f)
|
|
{
|
|
struct vim2m_ctx *ctx = file2ctx(file);
|
|
int ret;
|
|
|
|
ret = vidioc_try_fmt_vid_out(file, priv, f);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = vidioc_s_fmt(file2ctx(file), f);
|
|
if (!ret) {
|
|
ctx->colorspace = f->fmt.pix.colorspace;
|
|
ctx->xfer_func = f->fmt.pix.xfer_func;
|
|
ctx->ycbcr_enc = f->fmt.pix.ycbcr_enc;
|
|
ctx->quant = f->fmt.pix.quantization;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int vim2m_s_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct vim2m_ctx *ctx =
|
|
container_of(ctrl->handler, struct vim2m_ctx, hdl);
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_HFLIP:
|
|
if (ctrl->val)
|
|
ctx->mode |= MEM2MEM_HFLIP;
|
|
else
|
|
ctx->mode &= ~MEM2MEM_HFLIP;
|
|
break;
|
|
|
|
case V4L2_CID_VFLIP:
|
|
if (ctrl->val)
|
|
ctx->mode |= MEM2MEM_VFLIP;
|
|
else
|
|
ctx->mode &= ~MEM2MEM_VFLIP;
|
|
break;
|
|
|
|
case V4L2_CID_TRANS_TIME_MSEC:
|
|
ctx->transtime = ctrl->val;
|
|
if (ctx->transtime < 1)
|
|
ctx->transtime = 1;
|
|
break;
|
|
|
|
case V4L2_CID_TRANS_NUM_BUFS:
|
|
ctx->translen = ctrl->val;
|
|
break;
|
|
|
|
default:
|
|
v4l2_err(&ctx->dev->v4l2_dev, "Invalid control\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct v4l2_ctrl_ops vim2m_ctrl_ops = {
|
|
.s_ctrl = vim2m_s_ctrl,
|
|
};
|
|
|
|
static const struct v4l2_ioctl_ops vim2m_ioctl_ops = {
|
|
.vidioc_querycap = vidioc_querycap,
|
|
|
|
.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
|
|
.vidioc_enum_framesizes = vidioc_enum_framesizes,
|
|
.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
|
|
.vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
|
|
.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
|
|
|
|
.vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
|
|
.vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out,
|
|
.vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
|
|
.vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
|
|
|
|
.vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
|
|
.vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
|
|
.vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
|
|
.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
|
|
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
|
|
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
|
|
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
|
|
|
|
.vidioc_streamon = v4l2_m2m_ioctl_streamon,
|
|
.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
|
|
|
|
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
|
|
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
|
|
};
|
|
|
|
/*
|
|
* Queue operations
|
|
*/
|
|
|
|
static int vim2m_queue_setup(struct vb2_queue *vq,
|
|
unsigned int *nbuffers,
|
|
unsigned int *nplanes,
|
|
unsigned int sizes[],
|
|
struct device *alloc_devs[])
|
|
{
|
|
struct vim2m_ctx *ctx = vb2_get_drv_priv(vq);
|
|
struct vim2m_q_data *q_data;
|
|
unsigned int size, count = *nbuffers;
|
|
|
|
q_data = get_q_data(ctx, vq->type);
|
|
if (!q_data)
|
|
return -EINVAL;
|
|
|
|
size = q_data->width * q_data->height * q_data->fmt->depth >> 3;
|
|
|
|
while (size * count > MEM2MEM_VID_MEM_LIMIT)
|
|
(count)--;
|
|
*nbuffers = count;
|
|
|
|
if (*nplanes)
|
|
return sizes[0] < size ? -EINVAL : 0;
|
|
|
|
*nplanes = 1;
|
|
sizes[0] = size;
|
|
|
|
dprintk(ctx->dev, 1, "%s: get %d buffer(s) of size %d each.\n",
|
|
type_name(vq->type), count, size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vim2m_buf_out_validate(struct vb2_buffer *vb)
|
|
{
|
|
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
|
|
struct vim2m_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
|
|
|
|
if (vbuf->field == V4L2_FIELD_ANY)
|
|
vbuf->field = V4L2_FIELD_NONE;
|
|
if (vbuf->field != V4L2_FIELD_NONE) {
|
|
dprintk(ctx->dev, 1, "%s field isn't supported\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vim2m_buf_prepare(struct vb2_buffer *vb)
|
|
{
|
|
struct vim2m_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
|
|
struct vim2m_q_data *q_data;
|
|
|
|
dprintk(ctx->dev, 2, "type: %s\n", type_name(vb->vb2_queue->type));
|
|
|
|
q_data = get_q_data(ctx, vb->vb2_queue->type);
|
|
if (!q_data)
|
|
return -EINVAL;
|
|
if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
|
|
dprintk(ctx->dev, 1,
|
|
"%s data will not fit into plane (%lu < %lu)\n",
|
|
__func__, vb2_plane_size(vb, 0),
|
|
(long)q_data->sizeimage);
|
|
return -EINVAL;
|
|
}
|
|
|
|
vb2_set_plane_payload(vb, 0, q_data->sizeimage);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void vim2m_buf_queue(struct vb2_buffer *vb)
|
|
{
|
|
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
|
|
struct vim2m_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
|
|
|
|
v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
|
|
}
|
|
|
|
static int vim2m_start_streaming(struct vb2_queue *q, unsigned int count)
|
|
{
|
|
struct vim2m_ctx *ctx = vb2_get_drv_priv(q);
|
|
struct vim2m_q_data *q_data = get_q_data(ctx, q->type);
|
|
|
|
if (!q_data)
|
|
return -EINVAL;
|
|
|
|
if (V4L2_TYPE_IS_OUTPUT(q->type))
|
|
ctx->aborting = 0;
|
|
|
|
q_data->sequence = 0;
|
|
return 0;
|
|
}
|
|
|
|
static void vim2m_stop_streaming(struct vb2_queue *q)
|
|
{
|
|
struct vim2m_ctx *ctx = vb2_get_drv_priv(q);
|
|
struct vb2_v4l2_buffer *vbuf;
|
|
|
|
cancel_delayed_work_sync(&ctx->work_run);
|
|
|
|
for (;;) {
|
|
if (V4L2_TYPE_IS_OUTPUT(q->type))
|
|
vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
|
|
else
|
|
vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
|
|
if (!vbuf)
|
|
return;
|
|
v4l2_ctrl_request_complete(vbuf->vb2_buf.req_obj.req,
|
|
&ctx->hdl);
|
|
v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
|
|
}
|
|
}
|
|
|
|
static void vim2m_buf_request_complete(struct vb2_buffer *vb)
|
|
{
|
|
struct vim2m_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
|
|
|
|
v4l2_ctrl_request_complete(vb->req_obj.req, &ctx->hdl);
|
|
}
|
|
|
|
static const struct vb2_ops vim2m_qops = {
|
|
.queue_setup = vim2m_queue_setup,
|
|
.buf_out_validate = vim2m_buf_out_validate,
|
|
.buf_prepare = vim2m_buf_prepare,
|
|
.buf_queue = vim2m_buf_queue,
|
|
.start_streaming = vim2m_start_streaming,
|
|
.stop_streaming = vim2m_stop_streaming,
|
|
.wait_prepare = vb2_ops_wait_prepare,
|
|
.wait_finish = vb2_ops_wait_finish,
|
|
.buf_request_complete = vim2m_buf_request_complete,
|
|
};
|
|
|
|
static int queue_init(void *priv, struct vb2_queue *src_vq,
|
|
struct vb2_queue *dst_vq)
|
|
{
|
|
struct vim2m_ctx *ctx = priv;
|
|
int ret;
|
|
|
|
src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
|
|
src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
|
|
src_vq->drv_priv = ctx;
|
|
src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
|
|
src_vq->ops = &vim2m_qops;
|
|
src_vq->mem_ops = &vb2_vmalloc_memops;
|
|
src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
|
|
src_vq->lock = &ctx->vb_mutex;
|
|
src_vq->supports_requests = true;
|
|
|
|
ret = vb2_queue_init(src_vq);
|
|
if (ret)
|
|
return ret;
|
|
|
|
dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
|
dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
|
|
dst_vq->drv_priv = ctx;
|
|
dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
|
|
dst_vq->ops = &vim2m_qops;
|
|
dst_vq->mem_ops = &vb2_vmalloc_memops;
|
|
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
|
|
dst_vq->lock = &ctx->vb_mutex;
|
|
|
|
return vb2_queue_init(dst_vq);
|
|
}
|
|
|
|
static struct v4l2_ctrl_config vim2m_ctrl_trans_time_msec = {
|
|
.ops = &vim2m_ctrl_ops,
|
|
.id = V4L2_CID_TRANS_TIME_MSEC,
|
|
.name = "Transaction Time (msec)",
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.min = 1,
|
|
.max = 10001,
|
|
.step = 1,
|
|
};
|
|
|
|
static const struct v4l2_ctrl_config vim2m_ctrl_trans_num_bufs = {
|
|
.ops = &vim2m_ctrl_ops,
|
|
.id = V4L2_CID_TRANS_NUM_BUFS,
|
|
.name = "Buffers Per Transaction",
|
|
.type = V4L2_CTRL_TYPE_INTEGER,
|
|
.def = 1,
|
|
.min = 1,
|
|
.max = MEM2MEM_DEF_NUM_BUFS,
|
|
.step = 1,
|
|
};
|
|
|
|
/*
|
|
* File operations
|
|
*/
|
|
static int vim2m_open(struct file *file)
|
|
{
|
|
struct vim2m_dev *dev = video_drvdata(file);
|
|
struct vim2m_ctx *ctx = NULL;
|
|
struct v4l2_ctrl_handler *hdl;
|
|
int rc = 0;
|
|
|
|
if (mutex_lock_interruptible(&dev->dev_mutex))
|
|
return -ERESTARTSYS;
|
|
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
|
|
if (!ctx) {
|
|
rc = -ENOMEM;
|
|
goto open_unlock;
|
|
}
|
|
|
|
v4l2_fh_init(&ctx->fh, video_devdata(file));
|
|
file->private_data = &ctx->fh;
|
|
ctx->dev = dev;
|
|
hdl = &ctx->hdl;
|
|
v4l2_ctrl_handler_init(hdl, 4);
|
|
v4l2_ctrl_new_std(hdl, &vim2m_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0);
|
|
v4l2_ctrl_new_std(hdl, &vim2m_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0);
|
|
|
|
vim2m_ctrl_trans_time_msec.def = default_transtime;
|
|
v4l2_ctrl_new_custom(hdl, &vim2m_ctrl_trans_time_msec, NULL);
|
|
v4l2_ctrl_new_custom(hdl, &vim2m_ctrl_trans_num_bufs, NULL);
|
|
if (hdl->error) {
|
|
rc = hdl->error;
|
|
v4l2_ctrl_handler_free(hdl);
|
|
kfree(ctx);
|
|
goto open_unlock;
|
|
}
|
|
ctx->fh.ctrl_handler = hdl;
|
|
v4l2_ctrl_handler_setup(hdl);
|
|
|
|
ctx->q_data[V4L2_M2M_SRC].fmt = &formats[0];
|
|
ctx->q_data[V4L2_M2M_SRC].width = 640;
|
|
ctx->q_data[V4L2_M2M_SRC].height = 480;
|
|
ctx->q_data[V4L2_M2M_SRC].sizeimage =
|
|
ctx->q_data[V4L2_M2M_SRC].width *
|
|
ctx->q_data[V4L2_M2M_SRC].height *
|
|
(ctx->q_data[V4L2_M2M_SRC].fmt->depth >> 3);
|
|
ctx->q_data[V4L2_M2M_DST] = ctx->q_data[V4L2_M2M_SRC];
|
|
ctx->colorspace = V4L2_COLORSPACE_REC709;
|
|
|
|
ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
|
|
|
|
mutex_init(&ctx->vb_mutex);
|
|
INIT_DELAYED_WORK(&ctx->work_run, device_work);
|
|
|
|
if (IS_ERR(ctx->fh.m2m_ctx)) {
|
|
rc = PTR_ERR(ctx->fh.m2m_ctx);
|
|
|
|
v4l2_ctrl_handler_free(hdl);
|
|
v4l2_fh_exit(&ctx->fh);
|
|
kfree(ctx);
|
|
goto open_unlock;
|
|
}
|
|
|
|
v4l2_fh_add(&ctx->fh);
|
|
atomic_inc(&dev->num_inst);
|
|
|
|
dprintk(dev, 1, "Created instance: %p, m2m_ctx: %p\n",
|
|
ctx, ctx->fh.m2m_ctx);
|
|
|
|
open_unlock:
|
|
mutex_unlock(&dev->dev_mutex);
|
|
return rc;
|
|
}
|
|
|
|
static int vim2m_release(struct file *file)
|
|
{
|
|
struct vim2m_dev *dev = video_drvdata(file);
|
|
struct vim2m_ctx *ctx = file2ctx(file);
|
|
|
|
dprintk(dev, 1, "Releasing instance %p\n", ctx);
|
|
|
|
v4l2_fh_del(&ctx->fh);
|
|
v4l2_fh_exit(&ctx->fh);
|
|
v4l2_ctrl_handler_free(&ctx->hdl);
|
|
mutex_lock(&dev->dev_mutex);
|
|
v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
|
|
mutex_unlock(&dev->dev_mutex);
|
|
kfree(ctx);
|
|
|
|
atomic_dec(&dev->num_inst);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void vim2m_device_release(struct video_device *vdev)
|
|
{
|
|
struct vim2m_dev *dev = container_of(vdev, struct vim2m_dev, vfd);
|
|
|
|
v4l2_device_unregister(&dev->v4l2_dev);
|
|
v4l2_m2m_release(dev->m2m_dev);
|
|
#ifdef CONFIG_MEDIA_CONTROLLER
|
|
media_device_cleanup(&dev->mdev);
|
|
#endif
|
|
kfree(dev);
|
|
}
|
|
|
|
static const struct v4l2_file_operations vim2m_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = vim2m_open,
|
|
.release = vim2m_release,
|
|
.poll = v4l2_m2m_fop_poll,
|
|
.unlocked_ioctl = video_ioctl2,
|
|
.mmap = v4l2_m2m_fop_mmap,
|
|
};
|
|
|
|
static const struct video_device vim2m_videodev = {
|
|
.name = MEM2MEM_NAME,
|
|
.vfl_dir = VFL_DIR_M2M,
|
|
.fops = &vim2m_fops,
|
|
.ioctl_ops = &vim2m_ioctl_ops,
|
|
.minor = -1,
|
|
.release = vim2m_device_release,
|
|
.device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING,
|
|
};
|
|
|
|
static const struct v4l2_m2m_ops m2m_ops = {
|
|
.device_run = device_run,
|
|
.job_ready = job_ready,
|
|
.job_abort = job_abort,
|
|
};
|
|
|
|
static const struct media_device_ops m2m_media_ops = {
|
|
.req_validate = vb2_request_validate,
|
|
.req_queue = v4l2_m2m_request_queue,
|
|
};
|
|
|
|
static int vim2m_probe(struct platform_device *pdev)
|
|
{
|
|
struct vim2m_dev *dev;
|
|
struct video_device *vfd;
|
|
int ret;
|
|
|
|
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
|
|
if (!dev)
|
|
return -ENOMEM;
|
|
|
|
ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
|
|
if (ret)
|
|
goto error_free;
|
|
|
|
atomic_set(&dev->num_inst, 0);
|
|
mutex_init(&dev->dev_mutex);
|
|
|
|
dev->vfd = vim2m_videodev;
|
|
vfd = &dev->vfd;
|
|
vfd->lock = &dev->dev_mutex;
|
|
vfd->v4l2_dev = &dev->v4l2_dev;
|
|
|
|
video_set_drvdata(vfd, dev);
|
|
v4l2_info(&dev->v4l2_dev,
|
|
"Device registered as /dev/video%d\n", vfd->num);
|
|
|
|
platform_set_drvdata(pdev, dev);
|
|
|
|
dev->m2m_dev = v4l2_m2m_init(&m2m_ops);
|
|
if (IS_ERR(dev->m2m_dev)) {
|
|
v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
|
|
ret = PTR_ERR(dev->m2m_dev);
|
|
dev->m2m_dev = NULL;
|
|
goto error_dev;
|
|
}
|
|
|
|
#ifdef CONFIG_MEDIA_CONTROLLER
|
|
dev->mdev.dev = &pdev->dev;
|
|
strscpy(dev->mdev.model, "vim2m", sizeof(dev->mdev.model));
|
|
strscpy(dev->mdev.bus_info, "platform:vim2m",
|
|
sizeof(dev->mdev.bus_info));
|
|
media_device_init(&dev->mdev);
|
|
dev->mdev.ops = &m2m_media_ops;
|
|
dev->v4l2_dev.mdev = &dev->mdev;
|
|
#endif
|
|
|
|
ret = video_register_device(vfd, VFL_TYPE_VIDEO, 0);
|
|
if (ret) {
|
|
v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
|
|
goto error_m2m;
|
|
}
|
|
|
|
#ifdef CONFIG_MEDIA_CONTROLLER
|
|
ret = v4l2_m2m_register_media_controller(dev->m2m_dev, vfd,
|
|
MEDIA_ENT_F_PROC_VIDEO_SCALER);
|
|
if (ret) {
|
|
v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller\n");
|
|
goto error_v4l2;
|
|
}
|
|
|
|
ret = media_device_register(&dev->mdev);
|
|
if (ret) {
|
|
v4l2_err(&dev->v4l2_dev, "Failed to register mem2mem media device\n");
|
|
goto error_m2m_mc;
|
|
}
|
|
#endif
|
|
return 0;
|
|
|
|
#ifdef CONFIG_MEDIA_CONTROLLER
|
|
error_m2m_mc:
|
|
v4l2_m2m_unregister_media_controller(dev->m2m_dev);
|
|
#endif
|
|
error_v4l2:
|
|
video_unregister_device(&dev->vfd);
|
|
/* vim2m_device_release called by video_unregister_device to release various objects */
|
|
return ret;
|
|
error_m2m:
|
|
v4l2_m2m_release(dev->m2m_dev);
|
|
error_dev:
|
|
v4l2_device_unregister(&dev->v4l2_dev);
|
|
error_free:
|
|
kfree(dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int vim2m_remove(struct platform_device *pdev)
|
|
{
|
|
struct vim2m_dev *dev = platform_get_drvdata(pdev);
|
|
|
|
v4l2_info(&dev->v4l2_dev, "Removing " MEM2MEM_NAME);
|
|
|
|
#ifdef CONFIG_MEDIA_CONTROLLER
|
|
media_device_unregister(&dev->mdev);
|
|
v4l2_m2m_unregister_media_controller(dev->m2m_dev);
|
|
#endif
|
|
video_unregister_device(&dev->vfd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver vim2m_pdrv = {
|
|
.probe = vim2m_probe,
|
|
.remove = vim2m_remove,
|
|
.driver = {
|
|
.name = MEM2MEM_NAME,
|
|
},
|
|
};
|
|
|
|
static void __exit vim2m_exit(void)
|
|
{
|
|
platform_driver_unregister(&vim2m_pdrv);
|
|
platform_device_unregister(&vim2m_pdev);
|
|
}
|
|
|
|
static int __init vim2m_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = platform_device_register(&vim2m_pdev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = platform_driver_register(&vim2m_pdrv);
|
|
if (ret)
|
|
platform_device_unregister(&vim2m_pdev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
module_init(vim2m_init);
|
|
module_exit(vim2m_exit);
|